Can the dealer replace it free?

I have a 2000 model Cadillac Catera with 3.0L engine. It shows error codes P0335 and P0727. I know little about cars. Please help me find out what is going on and how to fix it. I would appreciate if some once can help me out from this.

Where is the thermostat located on a 2000 Cadillac Catera?

the sss steering system is not working at low speed which is when it is supposed to be the strongest i just bought this car though i had the same make model and year when new i am not ambulitory use transfer board to get in and out i can no longer drive any hints or where i could find a site for service manual mechanic milking me to death need car so volunters can drive me to Dr. and hospitals

It doesn't work on dashboard or car remote

Locations Relay Locations

it will not start. I also replaced the spark plugs. when it shut off the gas cap light came on, unscrewed it and put it back on nothing happens. acts like it wants to turn over but won't. what do you think the problem is?

can put back up, but will erratically go down. can stop
and put back up, but when-even does sam

again the car wont start for abaut one hour once the car is cold the car start. When turn the key when is hot nathink turn like there is no electric connection

Likes it's getting no fuel I check lines fuel pump not running